313013221121 has 16 divisors (see below), whose sum is σ = 341085667200. Its totient is φ = 286114768128.

The previous prime is 313013221117. The next prime is 313013221133. The reversal of 313013221121 is 121122310313.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 313013221121 - 2² = 313013221117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313013221093 and 313013221102.

It is not an unprimeable number, because it can be changed into a prime (313013221151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 601001 + ... + 993593.

It is an arithmetic number, because the mean of its divisors is an integer number (21317854200).

Almost surely, 2^313013221121 is an apocalyptic number.

It is an amenable number.

313013221121 is a deficient number, since it is larger than the sum of its proper divisors (28072446079).

313013221121 is a wasteful number, since it uses less digits than its factorization.

313013221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394088.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 313013221121 its reverse (121122310313), we get a palindrome (434135531434).

The spelling of 313013221121 in words is "three hundred thirteen billion, thirteen million, two hundred twenty-one thousand, one hundred twenty-one".